Pen.



I. H. MARSH.

PEN.

APPLICATION FILED AFR. 1111918.

Patented Nov. 19, 1918.

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PEN.

al of Lettere Eatent.

Patented Nov.. de, dl

Application led April 1` 1918. Serial No. 225,928.

To all whom it may concern:

Be it known that l, JAMES H. MARSH, a citizen of the United States, residing at New York, county of New York, and State of New York, have invented new and useful improvements in Pens, of which the following is a specification.

This invention relates to that class of pens in .which a solid stick of pigment is fed into a chamber located in the feed bar, where the ink is dissolved by combining it with a quantity of water. i

The invention is designed to include a large stick of ink with a rotary device, controlled hy the operator to move the ink sblowly into the mixing chamber of the feed The novel features of the invention are more fully described in the following specication and claims, and illustrated in the accompanying drawing in which Figure l represents a sectional side elevation of a pen, embodying this invention.

Fig. 2 is a side view of a spiral sleeve.

Fig. 3 is a similar view of a slotted sleeve.

Fi 4 is a horizontal section taken along the line 4-4 of Fig. l.

Fig. 5 is a detail view of a feed bar.

Fig. 6 is a horizontal section taken along the line 6-6 of Fig. l on a larger scale.

ln this drawing the numeral l2 designates a barrel or shell open on the top, and at its lower end is provided with a holder 13 screwed into the barrel. A feed bar la is idxed or inserted into the holder, and located in the bar is a chamber l5 for mixing the ink. rlhe bar is provided with an annular mouth i6 at its upper end, leading to or communicating with the chamber, Lateral openings 17 extend through the walls of the feed bar, so that the water will freely iiowl i into the chamber. A pen'or nib 18 is frictionally held between the holder and feed bar, and the curved shank of the pen covers the mixing chamber as indicated in Fig. 6.

An actuating cap i9 is mounted. on the upper open endv of the barrel and the spiral sleeve 20 is secured to the cap. ln this sleeve is arranged a sleeve 21, having a longitudinal slot 22 for guiding a pin 23, secured to a clamping ring 24 sliding in the sleeve. In order to prevent rotation of the slotted sleeve,- it'is connected at its lower end to the barrel by means of a tongue and groove 25 or other permanent fastening to prevent withdrawal from the barrel. A stick of pigment 2 6 is carried by the ring by inserting one end of the stickinto the ring. This ring can be split as is well known, and by its resiliency rmly holds the stick.

As shown in Fig. l, the pen is equipped with a cap 27, which when the pen is in use can be slipped over the top of the barrel, and when it is desired to carry the pen in the pocket, it can be inserted over the bottom end to cover and protect the pen point.

lt will be seen that when the cap i9 is rotated it operates the spiral sleeve to move the pin 23 in a rectilinearfpath along the slot 22, thus forcing the lower end ot the igment into the mouth of the mixing chamer. When the en point is dipped into water it will tric le through the interstices or joints between the shank of the pen and the barrel, thereby dissolving a small quantity of the pigment projecting into the mix ing chamber.

rlhe feed bar will control the ilow of ink from the ymixingchamber to the pen point. When the ink stick has been used, it can be replaced by another merely by removing the holder i3 and inserting the end of the stick into the resilient clamp. The mixing chamloer constitutes a reservoir. for holding a quantity of water converted into ink by its contact with the end of the stick, and the feed bar permits minute portions of the mixture to gravitate to the pen point.

l' claim:

l. ln a pen the combination with a feed bar having a mixing chamber, of a rotary device for feeding a stick of pigment to the mixing chamber.

2. ln a pen the combination with a feed bar having a mixing chamber, of a rotary device for feeding a stick of pignient in a rectilinear path into the mixing chamber.

3. ln a pen the combination with a feed bar having a mixing chamber, of a spiral rotary device for feeding a stick of pigment into the mixing chamber.

4. ln a pen the combination with a feed har having a mixing chamber, ci `a spiral rotary device for feeding a stick of pigment ibn a rectilinear path into the mixing chamroo 

